EP0253462A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Closed-loop engine control with feedback torque error compensation
Assignee: Motors Liquidation Co
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Filing: 1987-02-23
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Granted: —
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Expires: 2007-02-23
Abstract
Abstract A closed-loop engine control system (l0) is disclosed in which an engine (l2) is controlled to provide power to a load (l4,l8) as a function of measured feedback torque. A programmable digital controller (24) modifies the feedback torque by adding to it a synthesized correction torque provided by the product of the engine polar moment of inertia and the engine acceleration. The modified feedback torque is used for either closed-loop torque or horsepower engine control.
Inventors
- 👤 Charles Anthony Skarvan
- 👤 Stephen Allen Fisher
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 04:10
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/28; F05; F05D; F05D2270/00; F05D2270/01; F05D2270/05; F05D2270/053
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
A method of controlling a rotary output engine (l2) driving a load (l4,l8) through a torque-transmitting member (l6) which comprises measuring the torque transmitted through the torque-transmitting member (l6) as an electrical signal, supplying that signal to a computerised controller (24) to generate a feed-back signal, and supplying that feed-back signal to a fuel-scheduling apparatus (22) controlling the fuel flow to said rotary output engine (l2), characterised in that the method includes providing the computerised controller (24) with data which represents the polar moment of inertia of the rotary output engine (l2), measuring the acceleration of the torque-transmitting member (l6) as a second electrical signal which is supplied to the computerised controller (24), and then using the computerised controller (24) to modify the feedback torque signal by adding to it a synthesized correction torque provided by the product of the engine polar moment of inertia and the engine acceleration so as to compensate for the phase and amplitude error between the measured feedback torque and the actual gross engine torque.
Claim 2
Independent Claim
170 words
A method of controlling a rotary output engine (l2) driving a load (l4,l8) through a torque-transmitting member (l6) which comprises measuring the torque transmitted through the torque-transmitting member (l6) as an electrical signal, supplying that signal to a computerised controller (24) to generate a feed-back signal, and supplying that feed-back signal to a fuel-scheduling apparatus (22) controlling the fuel flow to said rotary output engine (l2), characterised in that the method includes providing the computerised controller (24) with data which represents the polar moment of inertia of the rotary output engine (l2), measuring the acceleration of the torque-transmitting member (l6) as a second electrical signal which is supplied to the computerised controller (24), and then using the computerised controller (24) to modify the feedback torque signal by adding to it a synthesized correction torque provided by the product of the engine polar moment of inertia and the engine acceleration so as to compensate for the phase and amplitude error between the measured feedback torque and the actual gross engine torque.
Claim 3
Dependent Claim
146 words
A closed-loop engine control apparatus in a rotary output engine (l2) driving a load (l4,l8) through a torque-transmitting member (l6), said closed-loop engine control apparatus comprising: a transducer (33) for measuring the torque transmitted by the torque-transmitting member (l6), a computerised controller (24) connected to the output of said transducer (33), and a fuel-scheduling apparatus (22) which controls fuel flow to said engine in response to feed-back signals generated by said computerised controller (24), characterised in that the transducer (33) also measures the speed of rotation of the torque-transmitting member (l6) in the form of an electrical signal supplied to the computerised controller (24), and the computerised controller (24) includes electronic circuitry which processes said electrical signal so as to add to the measured torque a correction torque which is equal to the moment of inertia of the engine multiplied by the acceleration of the engine.
Claim 4
Dependent Claim
146 words
A closed-loop engine control apparatus in a rotary output engine (l2) driving a load (l4,l8) through a torque-transmitting member (l6), said closed-loop engine control apparatus comprising: a transducer (33) for measuring the torque transmitted by the torque-transmitting member (l6), a computerised controller (24) connected to the output of said transducer (33), and a fuel-scheduling apparatus (22) which controls fuel flow to said engine in response to feed-back signals generated by said computerised controller (24), characterised in that the transducer (33) also measures the speed of rotation of the torque-transmitting member (l6) in the form of an electrical signal supplied to the computerised controller (24), and the computerised controller (24) includes electronic circuitry which processes said electrical signal so as to add to the measured torque a correction torque which is equal to the moment of inertia of the engine multiplied by the acceleration of the engine.
References Cited (Backward Citations)
No citation records indexed.
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